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diff --git a/sc/inc/convuno.hxx b/sc/inc/convuno.hxx
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+++ b/sc/inc/convuno.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SC_INC_CONVUNO_HXX
+#define INCLUDED_SC_INC_CONVUNO_HXX
+
+#include <algorithm>
+#include <i18nlangtag/lang.h>
+#include <com/sun/star/table/CellAddress.hpp>
+#include <com/sun/star/table/CellRangeAddress.hpp>
+#include "address.hxx"
+
+namespace com::sun::star::lang { struct Locale; }
+
+class ScUnoConversion
+{
+public:
+    static LanguageType GetLanguage( const css::lang::Locale& rLocale );
+    static void FillLocale( css::lang::Locale& rLocale, LanguageType eLang );
+
+    // CellAddress -> ScAddress
+    static inline void  FillScAddress(
+                            ScAddress& rScAddress,
+                            const css::table::CellAddress& rApiAddress );
+    // ScAddress -> CellAddress
+    static inline void  FillApiAddress(
+                            css::table::CellAddress& rApiAddress,
+                            const ScAddress& rScAddress );
+    // CellRangeAddress -> ScRange
+    static inline void  FillScRange(
+                            ScRange& rScRange,
+                            const css::table::CellRangeAddress& rApiRange );
+    // ScRange -> CellRangeAddress
+    static inline void  FillApiRange(
+                            css::table::CellRangeAddress& rApiRange,
+                            const ScRange& rScRange );
+
+    /** Returns true, if the passed ranges have at least one common cell. */
+    static inline bool  Intersects(
+                            const css::table::CellRangeAddress& rApiARange1,
+                            const css::table::CellRangeAddress& rApiARange2 );
+    /** Returns true, if the passed range rApiInner is completely inside the passed range rApiOuter. */
+    static inline bool  Contains(
+                            const css::table::CellRangeAddress& rApiOuter,
+                            const css::table::CellRangeAddress& rApiInner );
+};
+
+inline void ScUnoConversion::FillScAddress(
+        ScAddress& rScAddress,
+        const css::table::CellAddress& rApiAddress )
+{
+    rScAddress.Set( static_cast<SCCOL>(rApiAddress.Column), static_cast<SCROW>(rApiAddress.Row), static_cast<SCTAB>(rApiAddress.Sheet) );
+}
+
+inline void ScUnoConversion::FillApiAddress(
+        css::table::CellAddress& rApiAddress,
+        const ScAddress& rScAddress )
+{
+    rApiAddress.Column = rScAddress.Col();
+    rApiAddress.Row = rScAddress.Row();
+    rApiAddress.Sheet = rScAddress.Tab();
+}
+
+inline void ScUnoConversion::FillScRange(
+        ScRange& rScRange,
+        const css::table::CellRangeAddress& rApiRange )
+{
+    rScRange.aStart.Set( static_cast<SCCOL>(rApiRange.StartColumn), static_cast<SCROW>(rApiRange.StartRow), static_cast<SCTAB>(rApiRange.Sheet) );
+    rScRange.aEnd.Set( static_cast<SCCOL>(rApiRange.EndColumn), static_cast<SCROW>(rApiRange.EndRow), static_cast<SCTAB>(rApiRange.Sheet) );
+}
+
+inline void ScUnoConversion::FillApiRange(
+        css::table::CellRangeAddress& rApiRange,
+        const ScRange& rScRange )
+{
+    rApiRange.StartColumn = rScRange.aStart.Col();
+    rApiRange.StartRow = rScRange.aStart.Row();
+    rApiRange.Sheet = rScRange.aStart.Tab();
+    rApiRange.EndColumn = rScRange.aEnd.Col();
+    rApiRange.EndRow = rScRange.aEnd.Row();
+}
+
+inline bool ScUnoConversion::Intersects(
+        const css::table::CellRangeAddress& rApiRange1,
+        const css::table::CellRangeAddress& rApiRange2 )
+{
+    return (rApiRange1.Sheet == rApiRange2.Sheet) &&
+        (::std::max( rApiRange1.StartColumn, rApiRange2.StartColumn ) <= ::std::min( rApiRange1.EndColumn, rApiRange2.EndColumn )) &&
+        (::std::max( rApiRange1.StartRow, rApiRange2.StartRow ) <= ::std::min( rApiRange1.EndRow, rApiRange2.EndRow ));
+}
+
+inline bool ScUnoConversion::Contains(
+        const css::table::CellRangeAddress& rApiOuter,
+        const css::table::CellRangeAddress& rApiInner )
+{
+    return (rApiOuter.Sheet == rApiInner.Sheet) &&
+        (rApiOuter.StartColumn <= rApiInner.StartColumn) && (rApiInner.EndColumn <= rApiOuter.EndColumn) &&
+        (rApiOuter.StartRow <= rApiInner.StartRow) && (rApiInner.EndRow <= rApiOuter.EndRow);
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */